Atrioseptotomy

Atrioseptotomy (atrioseptotomia; anat. septum atriale interatrial septum + Greek tome incision, dissection) is a surgical operation consisting of dissection of the interatrial septum in order to create a defect to facilitate the outflow of blood from the right atrium to the left in some congenital heart defects.

The operation is indicated for severe forms of pulmonary artery stenosis, when overload of the right parts of the heart occurs. The creation of an atrial septal defect allows some of the venous blood to flow from the right atrium to the left and then into the systemic circulation, bypassing the pulmonary artery. This reduces pressure in the right parts of the heart and improves their blood supply.

Atrioseptotomy is usually performed under cardiopulmonary bypass. Access is through the right atrium. A defect measuring 5-10 mm is created in the interatrial septum. After surgery, lifelong anticoagulant therapy is necessary to prevent thromboembolic complications.

Atrioseptalgia is a pathological process in which there is excessive formation of fibrin in the area of ​​the septum of the right and left atria. Atrialization occurs due to fibrinoid changes in the stroma of the cardiac chambers and the formation of septal adhesions. May develop in parallel with myocardium